Phonic apparatus.



PATENTED AUG. 8, 1905.

T. H. MACDONALD. PHONIG APPARATUS. APPLIoATloN FILED PEB. 15. 1905.

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PATENTBD AUG. 8, 1905.

T. H. MACDONALD. PHONIG APPARATUS. APPLICATION FILED FEB. 15, 1905.

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UNITED STATES PATENT OFFICE.

AMERICAN GRAPHOPHONE COMPANY, OF BRIDGEPORT, CONNECTL' CUT, A CORPORATION OF VEST VIRGINIA.

PHoNio APPARATUS.

Specification of Letters Patent.

Patented Aug. 8, 1905.

Application filed February l5, 1905. Serial No. 245,740.

To all whom t may concern:

Be it known that I, THoMAs H. MACDON- ALD, of Bridgeport, Connecticut, have invented a new and useful Improvement in Phonic Apparatus, which invention is fully set forth in the following specification.

This invention relates to means for recording and reproducing sounds, and particularly to means of the kind wherein frictional force is employed to actuate a diaphragm or other secondary vibrating means, the sonorous vibrations being employed to modify such frictional force and to mold it, so to speak, into sound-waves. Apparatus of this type is described in United States Patent No. 678,566, granted July 16, 1901, to Daniel Higham, and in my pending United States application Serial No. 237,857, filed December 2l, 1904.

The object of the present invention is to furnish mechanism for carrying out in a practical way the invention set forth in the patent to said Higham and constitutes an improvement upon the structure described and claimed in my aforesaid application.

The improvements constituting the invention will be understood from the following description and drawings accompanying this application, in which- Figure l is a side elevation, partly in broken section, of so much of the apparatus as relates to the said improvements. Fig. 2 isvan enlarged sectional View of a detail thereof. Fig..3 is a cross-section on the line 3 3 of Fig. 2. Fig. 4 is a broken sectional detail. Fig. 5 is a transverse section on the line 5 5 of Fig. 1, showing in the dotted outlines some of the operatingparts of the machine; and Fig. 6 is a sectional detail showing a different position of the parts from that shown in Figs. 1 and 2.

Referring to the drawings, l indicates a vibratory diaphragm, which may be a diaphragm either of a recorder or a reproducer, here shown as that of a reproducer. This diaphragm is mounted in the usual or any suitable way in the head 2, supported on the usual carriage 3, which carriage is capable of sliding motion from left to right, and vice versa, on the support 4, being propelled by a screw or any suitable means in the manner well understood by those familiar with talking-machinessuch, for example, as the well-known graphophone.

5 is an arm projecting upward from the framework of the machine and has mounted thereon gearing 6, whose function will be hereinafter explained.

l Rigidly mounted on the arm 5 and projecting from theside thereof is a sleeve 7, within which is a sleeve 8 capable of rotation within the sleeve 7, but without any other movement relative thereto, the sleeve 8 being retained in position in sleeve 7 by means of a washer 9, secured to one end of said sleeve 7, and a gear-wheel 10, secured to the other end, as will be understood from an inspection of Fig. 2. Mounted within the revolving sleeve 8 is a third sleeve 11, which is free to revolve with sleeve I8 and also to slide longitudinally therethrough. The sleeve l1 is provided with two longitudinally-extending grooves 12 and 13, which are engaged by lugs or projections 14 and 15, here shown in the form of screws passing through the walls of the sleeve 8 and entering the grooves 12 and 13. On the interior of the sleeve 1l are formed grooves 16 and 17, extending longitudinally of the sleeve for nearly its entire length. A shaft 18, having an enlarged globular end 19, isiiexibly secured to the interior of the sleeve 11 by a pin 20, passing through the globular end 19 of the shaft, the ends of the pin proj ecting outward beyond the globular portion of said shaft and engaging in grooves 16 and 17 as will be understood from an inspection of Figs. 2 and 3, the construction being such that the shaft may be turned in a vertical plane around or on the pin 20, and at the same time is capable of a longitudinal sliding4 motion within the sliding sleeve 11.

Mounted upon a part 21, supported by the carriage 3, (see Fig. 1,) is a stirrup 22, pivoted at 23 to the part 21, said stirrup 22 affording a swinging bearing, as at 24, for the shaft 18. Secured on the outer end of the shaft 18 is a weight 25, while a friction-roll 26 is secured to the outer end of the shaft adjacent to the weight 25, which roll is engaged by thefriction-shoe 27, the stirrup-bearing for the shaft, the weight, the roll, and the' shoe being substantially of the character shown and described in my aforesaid application.

Referring to Fig. 5, 28 is a suitable tablet having a sound-record formed thereon, and

, 29 is a stylus-bearing lever resting upon said tablet and connected by the link 3() to the friction-shoe 27, which shoe is connected to the diaphragm 1 by a suitablel link 31.

The construction of the whole is such that when the driving-sleeve 8 is propelled by the gearing 10 the sliding sleeve 11 is caused to revolve with it by reason of the engagement of the lugs 14 and 15 in the longitudinallyextending grooves 12 and 13 in said sleeve.

- The revolution of the sliding sleeve 11 imparts similar revolution to the shaft 18 by reason of the engagement of the ends of the pin 2O in the longitudinally-extending grooves 16 and 17 on the interior of the sliding sleeve 11. The sleeve 11, however, while being compelled to revolve with the sleeve 8 is free to slide longitudinally therethrough, and likethe globular portion 19 of said shaft, together with the pin 20, will slide along through the sliding sleeve 11 until the globular portion 19 reaches the extreme left-hand portion of the sleeve, as shown in Fig. 6, when the shaft will engage the closed end of the sleeve and thence forth during the rest of the movement to the left both the shaft and the sleeve will slide together, the sliding sleeve 11 moving through the slidinor sleeve 8 until the parts reach the position shown in Fig. 6. The parts being in this position, if the carriage is again placed in Y connection with the driving-screw and the other mechanism for propelling it from left to right along the support 4 and the drivinggear 6 placed in operation the driving-sleeve 8, sliding sleeve 11, and the shaft 18 will all revolve together, and the shaft 18 will be drawn from left to right through the sliding sleeve until it reaches the right-hand end of said sleeve, when, the pin 2O engaging the ends of the grooves 16 and 17 in said sleeve, it will pick up the sleeve 11, and the sleeve will then be caused to slide longitudinally through the driving-sleeve 8 to the position shown in Fig. 2. From a study of this operation it will be seen that the shaft 18, together with the weight 25 and the friction-roll 26, will all be free to rise or fall, as the case may be, -moving around the joint formed by the y shown in my previous application where the bearing of the shaft within the driving-sleeve has been a constantly-changing one, owing to the sliding of the shaft through the sleeve, the weight bearing upon the friction-shoe has been a constantly varying quantity owing to the increase or decrease of the length of the shaft supporting the friction roll and weight. This gave a varying action to the friction device, which has been found undesirable. By the present construction, however, the weight bearing upon the frictionshoe is the same at all times, with the resulting improvement in the action of the parts.

In some cases the sliding sleeve 11, which forms the connection between the drivingsleeve 8 and the shaft 18, might be omitted, the shaft being flexibly connected so as to slide longitudinally within the Ydriving-sleeve 8. In this case, however, the shaft when in the extreme left-hand position projects for a considerable distanceto the left of the frame portion 5 of the machine, resulting in an inconvenient and unsightly appearance, whereas by the present construction the sliding sleeve 11 never projects but a very short distance to the left of the frame5, this projecting position being shown in Fig. 6.

What is claimed is- 1. In a phonic apparatus, the combination of a primary and a secondary vibrating ,means with an intermediate friction means including a friction roll and shoe, a shaft carrying said roll, a carriage supporting the entire weight of said shaft and roll, and means for revolving said shaft.

2. ln a phonic apparatus, the combination of a primary and a secondary vibrating means, an intermediate friction' means including a friction roll and shoe, means for revolving -said roll, and a carriage supportin said roll and the parts directly connecte thereto, the weight of said roll and connected parts on said carriage being constant.

V3. In a phonic ap aratus, the combination of a primary an a secondary vibrating means, with an intermediate friction means including a friction roll and shoe, a shaft carrying said roll, a carriage supporting the enj tire weight of said roll and shaft and a sliding connection between said shaft and a stationary part of the machine.l

4. In a phonic apparatus, the combination of a primary and a secondary vibrating means, with an intermediate friction device including a friction roll and shoe, a movable carriage, a shaft carrying said roll and having one bearing on said carriage, a revolving sleeve on a stationary part of the machine, withl which sleeve said shaft turns and to which it is slidably and pivotally connected.

5. In a phonic apparatus, l the combination of a primary and a secondary vibrating means, with an intermediate friction device including a friction roll and shoe, a movable carriage, a shaft carrying said roll and having one bearing on said carriage, a revolving ing a swinging bearing on said carriage, a revolving sleeve on a stationary part of the machine, longitudinallyextending grooves in said sleeve and lugs on said shaft engaging said grooves.

7. In a` phonic apparatus, the combination of a primary and a secondary vibrating means, with an intermediate friction device including a friction roll and shoe, a movable carriage, a revolving element carrying said roll and having a yielding bearing on said carriage, driving mechanism for revolving said element, and a jointed connection between said element and said driving mechanism.

8. In a phonic apparatus, the combination of a primary and a secondary vibrating means, with an intermediate friction device including a friction roll and shoe, a movable carriage, a bearing on a stationary part of the machine, a revolving sleeve turning in said bearing, a ointed element carrying said roll slidably connected to said sleeve but revolving therewith, and a yielding bearing for said element on said carriage.

9. In a phonic apparatus, the combination of a primary and a secondary vibrating means, with a friction device including a friction roll and shoe, a movable carriage supporting one of said vibrating members, a shaft carrying said roll and yieldingly supported on said carriage, driving mechanism for said shaft, and a iiexible joint between the shaft and said mechanism.

10. In a phonic apparatus, the combination of a primary and a secondary vibrating means, with an intermediate friction device including a friction roll and shoe, a movable carriage supporting one of said vibratin members, a revolving shaft carrying sai roll and yieldingly supported on said carriage, a revoluble sleeve on a stationary part of the machine, said shaft being flexibly and slidably connected to said revolving sleeve.

l1. In a phonic apparatus, the combination ofa primary and a secondary vibrating means, with an intermediate friction device including a friction roll and shoe, a movable carriage supporting one of said vibrating members, a shaft carrying said roll and yieldingly supported on said carriage, a revolving driving-sleeve on a stationary part of the machine, a second sleeve slidably mounted within said drivingsleeve but connected thereto so as to revolve therewith, and a sliding connection between said shaft and said second sleeve.

l2. In a phonic apparatus, the combination of a primary and a secondary vibrating means, with an intermediate friction device including a friction roll and shoe, a movable carriage supporting one of said vibrating members, a shaft carrying said roll and yieldingly supported on said carriage, a revolving driving-sleeve on a stationary part of the machine, a second sleeve slidably mounted within said driving-sleeve but connected thereto so as to revolve therewith, and a iieXible connection between said shaft and said second sleeve.

13. In a phonic apparatus, the combination of a primary and a secondary vibrating means, with an intermediate friction device including a friction roll and shoe, a movable carriage supporting one of said vibrating members, a shaft carrying said roll and yieldingly suplported on said carriage, a revolving driving-s eeve on a stationary part of the machine, a second sleeve slidably mounted within said driving-sleeve but connected thereto so as to revolve therewith, and a sliding and flexible connection between said shaft and second sleeve.

In testimony whereof I have signed this specification in the presence of two subscribing Witnesses.

THOMAS H. MACDONALD.

Witnesses:

A. B. KEoUGH, C. A. GIBNER. 

